(1/1-tanθ)+(1/1+tanθ)怎么算啊?要过程,谢谢!
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(1/1-tanθ)+(1/1+tanθ)怎么算啊?要过程,谢谢!(1/1-tanθ)+(1/1+tanθ)怎么算啊?要过程,谢谢!(1/1-tanθ)+(1/1+tanθ)怎么算啊?要过程,谢谢!(
(1/1-tanθ)+(1/1+tanθ)怎么算啊?要过程,谢谢!
(1/1-tanθ)+(1/1+tanθ)怎么算啊?要过程,谢谢!
(1/1-tanθ)+(1/1+tanθ)怎么算啊?要过程,谢谢!
(1/1-tanθ)+(1/1+tanθ)
=[(1+tanθ)+(1-tanθ)]/[(1-tanθ)(1+tanθ)]
=2/(1-tan^2 θ)
(1/1-tanθ)+(1/1+tanθ)
=cosθ/(cosθ-sinθ)+cosθ/(cosθ+sinθ)
=2cosθ^2/(cosθ^2-sinθ^2)
=(cos2θ+1)/cos2θ
=1+1/cos2θ
求证(1)1+tanθ/1-tanθ=tan(π/4+θ) (2)1-tanθ/1+tanθ=tan(π/4-θ)
化简tan+1/tan
tanα+1/tanα
化简 tan2θ-tanθ/1+tan2θtanθ
1/1-tanθ-1/1+tanθ 化简
证明(1/1-tanθ)-(1/1+tanθ)
证明:tanθ-(1/tanθ)=-2/tan2θ
(1-tan^4θ)cos^2θ+tan^2θ
三角比 1/tanθ-cos^2θ/tanθ
麻烦高手化简(1+tanθ)/(1-tanθ)
(1+tanθ)/(1-tanθ)如何化简啊?
tanΘ/2-1/(tanΘ/2)化简
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求y=tanθ+1/tanθ的周期
(tanθ)2(1+(tanθ)2)的不定积分(tanθ)2为tanθ的平方
化简[(tanθ*sinθ)/(tanθ-1)] +[ cosθ/(1-tanθ) ]
证明:tanθ/2-1/(tanθ/2)=-2/tanθ
tan(θ/2)-1/tan(θ/2)=-2/tanθ,